problem279

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v1.6.3 Latest Latest Go to latest Published: May 30, 2020 License: MIT Imports: 0 Imported by: 0

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Given a positive integer n, find the least number of perfect square numbers (for example, 1, 4, 9, 16, ...) which sum to n.

Example 1:

Input: n = 12
Output: 3 
Explanation: 12 = 4 + 4 + 4.

Example 2:

Input: n = 13
Output: 2
Explanation: 13 = 4 + 9.

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